Persistent personal messaging in a distributed system

ABSTRACT

A persistent personal messaging system provides shared memory space functionality supporting a user changing between a plurality of client devices, even within a loosely coupled, distributed system for persistent personal messaging. A user, irrespective of which messaging client they are using, logs on to the system. The act of logging on places user data, representing the user, into the shared memory space. A “contacts” service agent finds the friends and groups that the user belongs to and notifies other users that the user has logged on. Given the on-line status of other users and groups, a “history” service agent will retrieve previous messages from the shared memory space that formed the user&#39;s conversations with users and groups, as if the user had never logged off or switched devices. When the user adds a new message to any conversation, the message is added to the shared memory space.

CLAIM OF PRIORITY UNDER 35 U.S.C. §120

The present application for patent is a continuation of patentapplication Ser. No. 12/141,619 entitled “PERSISTENT PERSONAL MESSAGINGIN A DISTRIBUTED SYSTEM” filed Jun. 18, 2008, issued as U.S. Pat. No.8,060,603 and assigned to the assignee hereof and hereby expresslyincorporated by reference herein in its entirety.

REFERENCE TO CO-PENDING APPLICATIONS FOR PATENT

The present application for patent is related to the co-pending U.S.patent application Ser. No. 12/141,478, entitled “User Interfaces ForService Object Located In A Distributed System” by Jackson et al.,having filed on even date herewith, assigned to the assignee hereof, andexpressly incorporated by reference herein; and U.S. patent applicationSer. No. 12/141,682, entitled “Apparatus and Method of ManagingElectronic Communities of Users” to Jackson et al., filed on even dateherewith, assigned to the assignee hereof, and expressly incorporated byreference herein, which in turn claimed priority to ProvisionalApplication No. 60/945,091 entitled “Apparatus and Method of ManagingCommunities of Users” filed 19 Jun. 2007.

BACKGROUND

1. Field

The described aspects relate to interactive workspaces and ubiquitouscomputing. More particularly, it pertains to an infrastructure for apopulation of disparate computing platforms to readily interface to aservice object located in a distributed system to obtain persistentpersonal messaging.

2. Background

A distributed computer system, such as but not limited to the Internet,is characterized by rapid, real-time interchange among many dissimilarprocesses executing simultaneously on a large array of dissimilar andgeographically diverse processors. A distributed computer system'sresources are usually spatially separated, and the execution of itsapplications often involves multiple execution threads that can bewidely separated in time.

Operators for a population of users of client devices compete in acompetitive, evolving communication marketplace. It is difficult tosatisfy user expectations for various services, especially overdistributed computer systems. Often, user expectations are at variancewith each other in having different preferred service providers, such assearching. In addition, certain types of content can be segregated indifferent nodes of a distributed network with proprietary interfacesthat frustrate accessing these services.

Client devices are increasingly mobile with communication capabilitiesas their principal purpose or having wireless communication capabilitiesto extend connectivity. End users desire to access services with thesemobile communication devices that were previously the domain ofterminals, work stations, and general purpose computers. The latterdevices intended for general purpose computing have had a tendencytoward standardization, or at least to accommodate a wide range of usageenvironments. By contrast, mobile communication devices are progressedwith a priority toward economic manufacture, small size and extendedbattery service life with performance focused on wireless communicationrather than processing capabilities. Furthermore, the evolution ofbroadcast bands and protocols has tended to encourage a proliferation incommunication chipsets. As such, offering of various services to usersof mobile communication devices has been limited, especially as comparedto the larger current market for users of general purpose computers.

A number of obstacles discourage addressing the challenges of deployingservices to mobile communication devices as is conventional for ageneral purpose computer. The communication bandwidth to mobilecommunication devices is often constrained as compared to broadbandchannels to general purpose computers, discouraging downloading ofinterfacing software to properly configure the mobile communicationdevice for various services. Often the user interface of the mobilecommunication device is severely constrained in size, limiting displaysize and the number of control buttons that can be presented, furthercomplicating such configuring. Moreover, many users tend to make use ofmobile communication devices in situations (e.g., traveling) that do notlend themselves to such focused interaction.

One such function that is complicated by the unique constraints andpattern of usage of mobile devices is instant messaging. Often, a personwill use several different instances of an Internet messaging client,such as on a desktop personal computer (PC) at work, on a laptop PC athome and on a mobile device. One problem is that there is no continuitybetween using the different devices. A conversation with a single personor a group that is started on a client running on the PC is broken andlost once the user switches to the client on the laptop or mobiledevice.

SUMMARY

The following presents a simplified summary in order to provide a basicunderstanding of some aspects of the present disclosure. This summary isnot an extensive overview and is intended to neither identify key orcritical elements nor delineate the scope of such aspects. Its purposeis to present some concepts of the described aspects in a simplifiedform as a prelude to the more detailed description that is presentedlater.

In accordance with one or more aspects and corresponding disclosurethereof, various features are described in connection with use of aclient device, such as a mobile communication device, for accessingservices via a loosely coupled, distributed network that advantageouslymaintains continuity of instant messaging communications in a tuplespace that can be readily accessed from a wide variety of computingplatforms, providing seamless accessibility to various remote clients.

In one aspect, a method is provided for persistent messaging services toa population of client devices connected to a distributed network. Auser tuple is placed in a tuple space for a user initiating activecommunicating with a persistent messaging service from a client device.A message tuple stored in the tuple space is located that matches theuser tuple for a prior messaging session. A historical message derivedfrom the message tuple is sent to the client device.

In another aspect, at least one processor is provided for persistentmessaging services to a population of client devices connected to adistributed network. A first module places a user tuple in a tuple spacefor a user initiating active communicating with a persistent messagingservice from a client device. A second module locates a message tuplestored in the tuple space that matches the user tuple for a priormessaging session. A third module sends a historical message derivedfrom the message tuple to the client device.

In an additional aspect, a computer program product is provided forpersistent messaging services to a population of client devicesconnected to a distributed network. A computer-readable mediumcomprising sets of codes for causing a computer to place a user tuple ina tuple space for a user initiating active communicating with apersistent messaging service from a client device, to locate a messagetuple stored in the tuple space that matches the user tuple for a priormessaging session, and to send a historical message derived from themessage tuple to the client device.

In a further aspect, an apparatus is provided for persistent messagingservices to a population of client devices connected to a distributednetwork that has means for placing a user tuple in a tuple space for auser initiating active communicating with a persistent messaging servicefrom a client device, means for locating a message tuple stored in thetuple space that matches the user tuple for a prior messaging session,and means for sending a historical message derived from the messagetuple to the client device.

In yet another aspect, an apparatus is provided for persistent messagingservices to a population of client devices connected to a distributednetwork. A computing platform hosts a tuple space performing apersistent messaging service. A messaging gateway places a user tuple inthe tuple space for a user initiating active communication between aclient device and the messaging gateway via a communication network. Themessaging gateway further locates a message tuple stored in the tuplespace that matches the user tuple for a prior messaging session andsending a historical message derived from the message tuple to theclient device via the communication network.

In yet an additional aspect, a method is provided for receivingpersistent messaging services from a distributed network. An initiationof active communicating with a persistent messaging service from aclient device causes placement of a user tuple in a tuple space for auser. The initiation further causes locating of a message tuple storedin the tuple space that matches the user tuple for a prior messagingsession. A historical message can then be received that is derived fromthe message tuple.

In yet a further aspect, at least one processor is provided forreceiving persistent messaging services from a distributed network. Afirst module initiates active communicating with a persistent messagingservice from a client device to cause placement of a user tuple in atuple space for a user, and to cause locating of a message tuple storedin the tuple space that matches the user tuple for a prior messagingsession. A second module receives a historical message derived from themessage tuple to the client device.

In yet a further additional aspect, a computer program product isprovided for receiving persistent messaging services from a distributednetwork. A computer-readable medium comprises sets of codes for causinga computer to initiate active communicating with a persistent messagingservice from a client device to cause placement of a user tuple in atuple space for a user, and to cause locating of a message tuple storedin the tuple space that matches the user tuple for a prior messagingsession, and to receive a historical message derived from the messagetuple to the client device.

In yet another additional aspect, an apparatus is provided for receivingpersistent messaging services from a distributed network, having meansfor initiating active communicating with a persistent messaging servicefrom a client device to cause placement of a user tuple in a tuple spacefor a user, and to cause locating of a message tuple stored in the tuplespace that matches the user tuple for a prior messaging session, andhaving means for receiving a historical message derived from the messagetuple to the client device.

In another additional aspect, an apparatus is provided for receivingpersistent messaging services from a distributed network. Acommunication module controls a transmitter and a receiver forcommunicating over a communication network to a gateway that operablyinteracts with a tuple space performing a persistent messaging service.A user interface initiates active communicating with a persistentmessaging service via the communication module to cause placement of auser tuple in the tuple space for a user, and to cause locating of amessage tuple stored in the tuple space that matches the user tuple fora prior messaging session. The user interface receives via thecommunication module and receiver a historical message derived from themessage tuple.

To the accomplishment of the foregoing and related ends, one or moreaspects comprise the features hereinafter fully described andparticularly pointed out in the claims. The following description andthe annexed drawings set forth in detail certain illustrative aspectsand are indicative of but a few of the various ways in which theprinciples of the aspects and versions may be employed. Other advantagesand novel features will become apparent from the following detaileddescription when considered in conjunction with the drawings and thedisclosed versions are intended to include all such aspects and theirequivalents.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic diagram of one aspect of a system for persistentpersonal messaging via a plurality of client devices via to distributednetwork services;

FIG. 2 is a schematic diagram of one aspect of a communication networkoperable with the system of FIG. 1.

FIG. 3 is a diagram of an illustrative client device having an optimizedrated search results displaced, according to one aspect.

FIGS. 4-5 are timing diagrams of a methodology for persistent personalmessaging and super groups, according to one aspect.

DETAILED DESCRIPTION

A persistent personal messaging system provides tuple spacefunctionality supporting a user changing between a plurality of clientdevices, even within a loosely coupled, distributed system forpersistent personal messaging. A user, irrespective of which messagingclient they are using, logs on to the system. The act of logging onplaces a tuple, representing the user, into the tuple space. A“contacts” service agent finds the friends and groups that the userbelongs to and notifies other users that the user has logged on. Giventhe on-line status of other users and groups, a “history” service agentwill retrieve previous messages from the tuple space that formed theuser's conversations with users and groups, as if the user had neverlogged off or switched devices. When the user adds a new message to anyconversation, the message is added as a tuple to the tuple space.Because tuples have a lease, old messages in a conversation can beexpired automatically (or persisted externally) after a determinedperiod of time. Because of the nature of a tuple space, it is alsopossible to search across the tuple space for commonality amongst usersand groups to create virtual super groups. A super group can be targetedwith specific messages. For example, a super group which contains allcurrent users and groups which have an interest in football can betargeted by a “shout” service agent that will inject a latest footballresult into their conversations.

As used in this application, the terms “component,” “module,” “system,”and the like are intended to refer to a computer-related entity, eitherhardware, a combination of hardware and software, software, or softwarein execution. For example, a component may be, but is not limited tobeing, a process running on a processor, a processor, an object, anexecutable, a thread of execution, a program, and/or a computer. By wayof illustration, both an application running on a server and the servercan be a component. One or more components may reside within a processand/or thread of execution and a component may be localized on onecomputer and/or distributed between two or more computers.

The word “exemplary” is used herein to mean serving as an example,instance, or illustration. Any aspect or design described herein as“exemplary” is not necessarily to be construed as preferred oradvantageous over other aspects or designs.

Furthermore, the one or more aspects may be implemented as a method,apparatus, or article of manufacture using standard programming and/orengineering techniques to produce software, firmware, hardware, or anycombination thereof to control a computer to implement the disclosedaspects. The term “article of manufacture” (or alternatively, “computerprogram product”) as used herein is intended to encompass a computerprogram accessible from any computer-readable device, carrier, or media.For example, computer readable media can include but are not limited tomagnetic storage devices (e.g., hard disk, floppy disk, magnetic strips,etc.), optical disks (e.g., compact disk (CD), digital versatile disk(DVD), etc.), smart cards, and flash memory devices (e.g., card, stick,etc.). Additionally it should be appreciated that a carrier wave can beemployed to carry computer-readable electronic data such as those usedin transmitting and receiving electronic mail or in accessing a networksuch as the Internet or a local area network (LAN). Of course, thoseskilled in the art will recognize many modifications may be made to thisconfiguration without departing from the scope of the disclosed aspects.

Various aspects will be presented in terms of systems that may include anumber of components, modules, and the like. It is to be understood andappreciated that the various systems may include additional components,modules, etc. and/or may not include all of the components, modules,etc. discussed in connection with the figures. A combination of theseapproaches may also be used. The various aspects disclosed herein can beperformed on electrical devices including devices that utilize touchscreen display technologies and/or mouse-and-keyboard type interfaces.Examples of such devices include computers (desktop and mobile), smartphones, personal digital assistants (PDAs), and other electronic devicesboth wired and wireless.

In FIG. 1, a distributed system 100 allows client devices 101, such asmobile communication devices, to examine a tuple space 104 operating ona computing platform 102 to find messaging services, such as a messaginginterface service tuple 106. An appropriate attributes, depicted as userinterface code 108 from the service tuple 143 can then be loaded andexecuted as a search interface 109 on the client device 101 in theillustrative depiction. Thereby, a user 110 can interact with persistentmessaging services 112 via a communication module 113 of the clientdevice 101 to maintain continuity with a prior messaging conversationthat the user 110 engaged in via another client device 101′.

In the illustrative depiction, the persistent messaging system 112includes a status service tuple 114 that interacts with user tuples 116.A history service tuple 118 interacts with history tuples 120. Acontacts service tuple 122 interacts with the user tuples 116. Amessaging service tuple 124 interacts with a message tuple 126 that inturn can interact with the history tuples 120. A shout service tuple 128and an advert service tuple 130 each interacts with interest attributes132 of the user tuples 116.

An operator 134, such as a carrier for digital services via a radioaccess network or digital cellular service, can provide a gateway 136between the client device 102 and the tuple space 104. In particular amessaging component 138 that relays personal messaging through acommunication network 140 to the plurality of client devices 102 asvalidated by a subscriber services component 142.

The tuple space 104 is a globally shared, associatively addressed memoryspace that is organized as a grouping of tuples. A “tuple” is the basicelement of a tuple space system. In the context of a tuple space basedcoordination language like Linda, a tuple is a vector having fields orvalues of certain types. In a broader sense, a “tuple” is an entry in aninformation storage system. For example, a row in a relational databasesystem can be referred to as a tuple.

In Linda-like languages, constructs called “templates” are used toassociatively address tuples via matching techniques. A template matchesa tuple if they have an equal number of fields and if each templatefield matches the corresponding tuple field.

Tuple space based coordination languages provide a simple yet powerfulmechanism for inter-process communication and synchronization, which isthe crux of parallel and distributed programming A process with data toshare generates a tuple and places it into the tuple space. A processrequiring data simply requests a tuple from the tuple space. Tuple spaceprograms may be easier to write and maintain for a number of reasonsincluding the following:

(1) Destination uncoupling (fully anonymous communication)—the creatorof a tuple requires no knowledge about the future use of that tuple orits destination.

(2) Spatial uncoupling—because tuples are retrieved using an associativeaddressing scheme, multiple address-space-disjoint processes can accesstuples in the same way.

(3) Temporal uncoupling—tuples have their own life span, independent ofthe processes that generated them or any processes that may read them.This enables time-disjoint processes to communicate seamlessly.

The implementation of the tuple space can be either “closed” or “open.”The closed implementations use compile time analysis of object andsource code to provide highly efficient closed programs. The openimplementations allow processes, agents, and programs to coordinatethrough tuple spaces without the run-time system requiring any priorknowledge. Essentially, the open implementations provide a persistentdata store.

The Linda language uses three standard instructions or primitives. Theseare (with their informal semantics):

(1) out(tuple) Insert a tuple into a tuple space.

(2) in(template) If a tuple exists that matches the template, thenremove the tuple and return it to the agent performing the in. If nomatching tuple is available, then the primitive blocks until a matchingtuple is available.

(3) rd(template) If a tuple exists that matches the template, thenreturn a copy of the tuple to the agent that performed the rd. If thereis no matching tuple, then the primitive blocks until a matching tupleis available.

Tuple space 104 comprises a data repository, and each of a service tuple143 and a data tuple 144 placed in tuple space 104 comprises an objecthaving an ordered set of data comprising a tuple type 146 and tupleattributes 148. Further, tuple attributes 148 may vary depending upontuple type 146. The tuple space 104 comprises an abstract space operableto receive data objects, e.g. tuple 144, and includes a predeterminedset of operations that can be performed within the space. For example,the predetermined set of functions may include an “in” function and a“rd” function, which both take input parameters that allow the selectionof specific tuples in the space by matching the input parameters, wheregiven, with those values present within the tuple space. Additionally,both the “in” and “rd” functions may have non-blocking equivalents (inpand rdp). In some aspects, the predetermined set of functions mayinclude a set of operations, such as JAVA methods, that may be performedon both tuple space 104 and tuple 144.

Further, in a specific example, each tuple 144 is an instance of acom.qualcomm.qspaces.linda.Tuple class or subclass, and is created witha set of attributes 148, defined by an array of objects which arespecified when the tuple is constructed. The array can be zero-length,however, in some aspects, the array may not be null. In addition, insome aspects, none of the individual attribute objects in the array maybe null.

In some aspects, when the tuple 144 is first constructed, and every timethe respective attributes 148 are retrieved from the respective tuple,the array of objects may be defensively copied using a very fast form ofin-memory serialization. This process allows the tuple 144 to beimmutable, and therefore, guarantees the integrity of tuple space 104 inwhich the tuple 144 resides.

In the above-noted aspects, tuple equality adheres to the same equalityprinciples of any JAVA object, including the symmetry rule which statesthat if t1.equals (t2) then t2.equals (t1).

Specifically, a tuple equals another tuple, e.g. t1.equals(t2), if t2,known as a template, meets the following criteria:

1) The class 120 of the template t2 is the same class 120 as the tuplet1.

2) The attributes 122 of the template t2 are equal to the attributes 122of the tuple t1, meaning that t2's attributes 122 are the same as t1'sattributes 122, irrespective of their order.

In other aspects, a tuple matches another tuple, e.g. t1.matches(t2), ift2, known as a template, meets the following criteria:

1) The class 120 of the template t2 is the same class 120 or a superclass of the tuple t1.

2) The attributes 122 of the template t2 match the attributes 122 of thetuple t1, meaning that t2's attributes 122 are the same set or a subsetof t1's attributes 122, irrespective of their order.

When matching one tuple with another, the symmetry rule does not apply;so, t1.matches(t2) does not necessarily equate to t2.matches(t1).

In some aspects, the comparison of one set of tuple attributes 148 withanother uses the normal object equality rules, so any object used as atuple attribute 148 can implement the object.equals(Object obj) andobject.hashcode( )methods.

A tuple 144 is added to tuple space 104 with a lease 150. Lease 150 is aperiod of time, for example specified in milliseconds, which defines howlong the tuple will remain in the respective tuple space 104. Forexample, lease 150 having a value of zero may indicate that therespective tuple never expires. Once lease 150 has expired for arespective tuple, the tuple is automatically removed from tuple space104.

Service tuples 143 represent services that interact with by clients ofthe tuple space 104, such as client devices 101. Further, service tuples143 are also autonomous “live” JAVA objects in their own right, whichmay also interact with tuple space 104 and other tuples in the space.Service tuples 143 may be discovered in the same manner as other tuples,e.g. by matching the class and attributes 148 of the tuple. In someaspects, service tuples 143 may not be used in this way, however, ratherservice tuples 143 are interacted with indirectly by placing othertuples, such as data tuples 144, into tuple space 104.

For example, a client, such as a respective client device 101, maycreate data tuple 144 of class A with attributes “abc” and “123,” andplaces the tuple into tuple space 104. As such, data tuple 144 can bedescribed using the following notation:

(A, “abc”, 123).

Service tuple 143 is a live object which can interact with tuple space104 in the same way as a client application. As such, in this example,service tuple 143 has been instantiated and is blocking on a read fromtuple space 104 for any tuples with a matching template for class “A”and any attributes. Such a matching criterion can be described asfollows:

(A, ?s, ?x)

where ?s and ?x mean that any values of the string s and the integer xwill be matched. Consequently, tuple space 104 matches the template fromservice tuple 106, and will then read tuple A from tuple space 104. Inthis manner, the described aspects pass parameters in the form of tuplesto a service.

Further, in system 100, it is possible to embed objects that representuser interfaces 108 into the service objects themselves. Consider thefollowing user interface service tuple:

(A, [Java], [Flash], [uiOne])

The service tuple 143, for instance, can contains three user interfaceobjects, such as a user interface A attribute (e.g., defined in JAVA™),a user interface B attribute (e.g., defined in ADOBE FLASH) and a userinterface C (e.g., defined in uiOne™ technologies of QUALCOMMIncorporated of San Diego, Calif.). In the context of mobility, thepresent aspects enable the offering of a service across a wide varietyof wireless devices, each with its own specific requirements, whether interms of support of different technologies such as Java, Flash or uiOne,or even multiple variants of a single technology, optionally includingoptimizations for screen size or other device-specific properties. Arespective client device (and corresponding application) 101 and/or anyother party to system 100, is thus able to locate a user interfaceservice object and then load user interface components from it.

Data tuple 144 may be placed into tuple space 104 either directly by arespective client device 101, such as a wireless device, or alternatelyby a data source, such as operator gateway 136, as a service with whichclient device 101 interacts, or a service connected to the serviceinteracting with client device 101. For example, client device 101 maybe any type of computerized wireless device, such as a cellulartelephone, a satellite telephone, a PDA, a laptop computer, etc.

Referring to FIG. 2, for example, a communications network 300 includesone or a plurality of client devices 302, wireless telephone devices inthis case, that utilizes a wireless network 304 to communicate withwired network 306 (e.g. a local area network, LAN, etc.) having networkdevice or server 308 and/or storage device 310 and/or data source 312.One or both of network device/server 308 and/or storage device 310 mayinclude tuple space 104 and some portions the above-discussed componentsof system 100. Further data source 312 may include a processor and amemory in communication with the processor, wherein the memory comprisesa tuple generation module having tuple generation logic operable togenerate a plurality of data tuples from any source of data operable toreadily interface with unknown services, such as a web-basedtransactional service. In particular, wireless device 101 includes acomputer platform 314 having a memory 316 in communication with aprocessor 318, such as via an application programming interface (API)320 that enables interaction with any resident applications, such asclient identification component 322 and a search service interface 324that is located in tuple space 104.

Further, network device or server 308 and/or storage device 310 and/ordata source 312 may include a processor and a memory in communicationwith the processor, as well as an interfacing, search and rating module(not depicted) stored in the memory and executable by the processor,wherein the interface, search and rating module comprises tuple space104, service tuple 143, and rating service tuple 118, described above.Wireless network 304 is connected to wired network 306 via a carriernetwork 326. Network device or server 308 and/or storage device 310and/or data source 312 may be present on communications network 300 withany other network components that are desired to provide communitymanagement capabilities and/or cellular telecommunication services.Network device or server 308 and/or storage device 310 and/or datasource 312 may communicate with carrier network 326 through data links328 and 330, which may be data links such as the Internet, a secure LAN,WAN, or other network. Carrier network 326 controls messages (generallybeing data packets) sent to a mobile switching center (MSC) 332.Further, carrier network 326 communicates with MSC 332 by the network330, such as the Internet, and/or POTS (plain old telephone service).For example, in network 330, a network, or Internet portion transfersdata and the POTS portion transfers voice information. MSC 332 may beconnected to multiple base stations (BTS) 334 by another network 336,such as a data network and/or Internet portion for data transfer and aPOTS portion for voice information. BTS 334 ultimately broadcastsmessages wirelessly to the wireless communication devices 302, forexample using predetermined voice and/or data packet services, such asCode Division Multiple Access (CDMA) and short messaging service (SMS),respectively, or any other over-the-air methods. Thus, communicationnetwork 300, in combination with system 100 (FIG. 1), allow for thediscovery, creation and management of electronic or on-line user mediaaccess based on relationships discovered between data objects in a tuplespace.

It should be noted that FIG. 5 is a representative diagram that morefully illustrates the components of a wireless communication network andthe interrelation of the elements of one aspect of the present system.Communications network 300 is merely exemplary and can include anysystem whereby remote modules, such as wireless communication devices302, communicate over-the-air between and among each other and/orbetween and among other components of a wireless and/or wired network,including, without limitation, wireless network carriers, and/orservers.

In FIG. 3, an illustrative mobile communication device 400 can serve asclient device for remotely accessing and controlling persistentmessaging services via a graphical user interface (GUI) 402, which caninclude physical controls such as dial tone multi-function (DTMF) keypad404, with four cursor keys 406 and select button 408, and left, middleand right menu buttons 410, 412, 414. Alternatively or in addition, theGUI 402 can be a touch screen. The GUI 402 can include a display 416 asdepicted. Alternatively, a display with touch screen capability can alsobe used to provide soft input controls (not shown). The display 416 candepict a dynamic messaging interface 418 organized under a hierarchy oftabs of a messaging tab 420, player 422 tab, a find tab 424 and a linkstab 426. The interface 418 can include historical conversation threads428 made by the user from a different device (not shown). These threadscan be located, selected, saved via menu options 428, 430, and 432,respectively.

The GUI 402 can also provide an opportunity to set personal interests,as depicted at 434. An advertising banner 436, that can be interactive,can be received based upon an interest 132 incorporated into the usertuple 116 (FIG. 1), set by the “select interests” control 434.Similarly, a shout message 138 can be presented also based on theinterest 132 incorporated into the user tuple 116 (FIG. 1), set by the“select interests” control 434.

In view of the exemplary systems described supra, methodologies that maybe implemented in accordance with the disclosed subject matter have beendescribed with reference to several flow diagrams. While for purposes ofsimplicity of explanation, the methodologies are shown and described asa series of blocks, it is to be understood and appreciated that theclaimed subject matter is not limited by the order of the blocks, assome blocks may occur in different orders and/or concurrently with otherblocks from what is depicted and described herein. Moreover, not allillustrated blocks may be required to implement the methodologiesdescribed herein. Additionally, it should be further appreciated thatthe methodologies disclosed herein are capable of being stored on anarticle of manufacture to facilitate transporting and transferring suchmethodologies to computers. The term article of manufacture, as usedherein, is intended to encompass a computer program accessible from anycomputer-readable device, carrier, or media.

In FIGS. 4-5, an illustrative methodology 700 is depicted for a User “A”702, User “B” 704, User “C” 706, and a Third Party 708 interacting viaan instant messaging gateway 710 to a server 712 that hosts a tuplespace 714. A persistent messaging service 716 provided by the tuplespace 714 provides individual, group, shout, and advert persistentmessaging services for a subscriber population 718.

With initial reference to FIG. 4, as depicted at 720, the User A 710logins into a persistent messaging service by transmitting to theinstant messaging gateway 710. As depicted at 722, the gateway 710causes a status service tuple to add a user tuple to the tuple space 714and as depicted at 724 causes a contacts service tuple to find buddiesfor User A. Matching user tuples are returned by the tuple space 714 tothe instant messaging gateway 710, as depicted at 726, which in turnnotifies User B 704 as depicted at 728 and User C 706 as depicted at 730that User A is online. As depicted at 732, the history service tupleplaced by the gateway 710 finds recent message tuples for User A 702,which are returned as depicted 734 by the tuple space 714.

As depicted at 736, the gateway 710 returns the recent user/groupconversation threads to User A 702. Continuing a conversation, the UserA 702 sends a message intended for User B 704 as depicted at 738 to thegateway 710. The gateway 710 causes the message service to add a messagetuple in tuple space 714 for this message as depicted at 740 and relaysthe message to User B 704 as depicted at 742.

As depicted at 744, User A can also continue a group conversation for aGroup Z comprised of User B 704 and User C 706 by sending a messageintended for Group Z to the gateway 710. The gateway 710 causes themessage service to add a message tuple in tuple space 714 for this groupmessage as depicted at 746 and relays the group message to User B 704 asdepicted at 748 and to User C 706 as depicted at 750.

In addition to individual messages and group messages, the persistentmessaging service can support shout messages to those sharing aninterest rather than being part of a defined group. As depicted at 752,the Third Party 708 sends a shout message to the gateway 710 that causesthe shout service tuple to find user tuples with a matching interest asdepicted at 754.

Continuing with reference to FIG. 5, the tuple space 714 returns withmatching user tuples to gateway 710 as depicted at 756. The gateway 710in turn relays the targeted (shout) message interspersed with userconversations to those identified users, depicted respectively at 758and 760 to User A 702 and User C 706.

In addition to individual, group, and shout persistent messaging, asdepicted at 762, the Third Party 708 can send a targeted advertisement(“advert”) to the gateway 710. In response, the gateway 710 causes theshout service to find user tuples with a matching interest in tuplespace 714, as depicted at 764, which in turn returns matching usertuples as depicted at 766. The gateway 710 intersperses the targetedmessage (advert) to the identified users, depicted respectively at 768and 770 to User A 702 and User B 704.

When User A causes a logoff indication to go to gateway 710 as depictedat 780, the gateway 710 causes the status service tuple to remove theuser tuple from the tuple space 714 as depicted at 782. The gateway 710causes the contact service tuple to find buddies for User A 702 in tuplespace 714 as depicted at 784. In turn, the tuple space 714 returnsmatching user tuples to the gateway 710 as depicted at 786. The gateway710 uses these identified buddies to send a message that User A 702 isoffline to User B 704 and User C 706 as depicted respectively at 788 and790.

The various illustrative logics, logical blocks, modules, and circuitsdescribed in connection with the aspects disclosed herein may beimplemented or performed with a general purpose processor, a digitalsignal processor (DSP), an application specific integrated circuit(ASIC), a field programmable gate array (FPGA) or other programmablelogic device, discrete gate or transistor logic, discrete hardwarecomponents, or any combination thereof designed to perform the functionsdescribed herein. A general-purpose processor may be a microprocessor,but, in the alternative, the processor may be any conventionalprocessor, controller, microcontroller, or state machine. A processormay also be implemented as a combination of computing devices, e.g., acombination of a DSP and a microprocessor, a plurality ofmicroprocessors, one or more microprocessors in conjunction with a DSPcore, or any other such configuration. Additionally, at least oneprocessor may comprise one or more modules operable to perform one ormore of the steps and/or actions described above.

Further, the steps and/or actions of a method or algorithm described inconnection with the aspects disclosed herein may be embodied directly inhardware, in a software module executed by a processor, or in acombination of the two. A software module may reside in RAM memory,flash memory, ROM memory, EPROM memory, EEPROM memory, registers, a harddisk, a removable disk, a CD-ROM, or any other form of storage mediumknown in the art. An exemplary storage medium may be coupled to theprocessor, such that the processor can read information from, and writeinformation to, the storage medium. In the alternative, the storagemedium may be integral to the processor. Further, in some aspects, theprocessor and the storage medium may reside in an ASIC. Additionally,the ASIC may reside in a user terminal In the alternative, the processorand the storage medium may reside as discrete components in a userterminal. Additionally, in some aspects, the steps and/or actions of amethod or algorithm may reside as one or any combination or set of codesand/or instructions on a machine readable medium and/or computerreadable medium, which may be incorporated into a computer programproduct.

While the foregoing disclosure discusses illustrative aspects and/orversions, it should be noted that various changes and modificationscould be made herein without departing from the scope of the describedaspects and/or aspects as defined by the appended claims. Furthermore,although elements of the described aspects and/or aspects may bedescribed or claimed in the singular, the plural is contemplated unlesslimitation to the singular is explicitly stated. Additionally, all or aportion of any aspect and/or aspect may be utilized with all or aportion of any other aspect and/or aspect, unless stated otherwise.

It should be appreciated that any patent, publication, or otherdisclosure material, in whole or in part, that is said to beincorporated by reference herein is incorporated herein only to theextent that the incorporated material does not conflict with existingdefinitions, statements, or other disclosure material set forth in thisdisclosure. As such, and to the extent necessary, the disclosure asexplicitly set forth herein supersedes any conflicting materialincorporated herein by reference. Any material, or portion thereof, thatis said to be incorporated by reference herein, but which conflicts withexisting definitions, statements, or other disclosure material set forthherein, will only be incorporated to the extent that no conflict arisesbetween that incorporated material and the existing disclosure material.

What is claimed is:
 1. A method for providing persistent messagingservices to a population of client devices connected to a distributednetwork, comprising: placing a user data in a shared memory space for auser initiating active communications with a persistent messagingservice from a client device; locating a message object stored in theshared memory space that matches the user data for a prior messagingsession; and sending a historical message derived from the messageobject to the client device, wherein the historical message comprises atleast a portion of the prior messaging session.
 2. The method of claim1, further comprising: locating a buddy user associated with the user byusing a contact service object to match an attribute of a buddy userdata in the shared memory space; and notifying a client device of thebuddy user that the user is accessible to messaging.
 3. The method ofclaim 1, further comprising: receiving a new message from the userintended for a buddy user; identifying the buddy user with a contactservice object matching an attribute of the user data in the sharedmemory space; and relaying the new message to a client device of thebuddy user.
 4. The method of claim 3, further comprising placing a newmessage object containing the new message in the shared memory space. 5.The method of claim 1, further comprising: receiving a new message fromthe user intended for a predefined group of users; identifying eachaccessible member of the predefined group of users with a contactservice object matching an attribute of a plurality of user data in theshared memory space; and relaying the new message to respective clientdevices of the accessible members.
 6. The method of claim 5, furthercomprising placing a new message object containing the new message inthe shared memory space.
 7. The method of claim 1, further comprising:receiving a new message having an interest attribute from the userintended for distribution to an unspecified subset of accessible users;identifying a subset of accessible users with a shout service objectmatching the interest attribute with a plurality of user data in theshared memory space; and relaying the new message to respective clientdevices of the accessible users.
 8. The method of claim 7, wherein thenew message comprises an advertisement.
 9. The method of claim 1,further comprising locating an interface object in the shared memoryspace in response to the client device requesting messaging service. 10.The method of claim 1, further comprising: receiving an indication fromthe client device of the user that the user is no longer accessible tothe persistent messaging service; locating a buddy user associated withthe user by using a contact service object to match an attribute of abuddy user data in the shared memory space; and notifying a clientdevice of the buddy user that the user is not accessible to messaging.11. The method of claim 1, wherein the shared memory space is arelational database.
 12. The method of claim 11, wherein the user datais a row in the relational database.
 13. The method of claim 1, whereinthe shared memory space is a globally shared, associatively addressedmemory space.
 14. At least one processor for providing persistentmessaging services to a population of client devices connected to adistributed network, comprising: a hardware module for placing a userdata in a shared memory space for a user initiating activecommunications with a persistent messaging service from a client device;a first module for locating a message object stored in the shared memoryspace that matches the user data for a prior messaging session; and asecond module for sending a historical message derived from the messageobject to the client device, wherein the historical message comprises atleast a portion of the prior messaging session.
 15. A computer programproduct for providing persistent messaging services to a population ofclient devices connected to a distributed network, comprising: anon-transitory computer-readable medium, comprising: at least oneinstruction for causing a computer to place a user data in a sharedmemory space for a user initiating active communications with apersistent messaging service from a client device; at least oneinstruction for causing the computer to locate a message object storedin the shared memory space that matches the user data for a priormessaging session; and at least one instruction for causing the computerto send a historical message derived from the message object to theclient device, wherein the historical message comprises at least aportion of the prior messaging session.
 16. An apparatus for providingpersistent messaging services to a population of client devicesconnected to a distributed network, comprising: means for placing a userdata in a shared memory space for a user initiating activecommunications with a persistent messaging service from a client device;means for locating a message object stored in the shared memory spacethat matches the user data for a prior messaging session; and means forsending a historical message derived from the message object to theclient device, wherein the historical message comprises at least aportion of the prior messaging session.
 17. An apparatus for providingpersistent messaging services to a population of client devicesconnected to a distributed network, comprising: a computing platformhosting a shared memory space performing a persistent messaging service;a communication network; and a messaging gateway placing a user data inthe shared memory space for a user initiating active communicationbetween a client device and the messaging gateway via the communicationnetwork, the messaging gateway further locating a message object storedin the shared memory space that matches the user data for a priormessaging session, and sending a historical message derived from themessage object to the client device via the communication network,wherein the historical message comprises at least a portion of the priormessaging session.
 18. The apparatus of claim 17, further comprising themessaging gateway receiving via the communication network a new messagefrom the user intended for a predefined group of users, identifying eachaccessible member of the predefined group of users with a contactservice object matching an attribute of a plurality of user data in theshared memory space, and relaying the new message to respective clientdevices of the accessible members via the communication network.
 19. Theapparatus of claim 18, further comprising the messaging gateway placinga new message object containing the new message in the shared memoryspace.
 20. The apparatus of claim 17, further comprising the messaginggateway receiving via the communication network a new message having aninterest attribute from the user intended for distribution to anunspecified subset of accessible users, identifying the unspecifiedsubset of accessible users with a shout service object matching theinterest attribute with a plurality of user data in the shared memoryspace, and relaying the new message to respective client devices of theunspecified subset of accessible users.
 21. The apparatus of claim 20,wherein the new message comprises an advertisement.
 22. The apparatus ofclaim 17, further comprising the messaging gateway locating an interfaceobject in the shared memory space in response to the client devicerequesting messaging service via the communication network.
 23. Theapparatus of claim 17, further comprising the messaging gatewayreceiving via the communication network an indication from the clientdevice of the user that the user is no longer accessible to thepersistent messaging service, locating a buddy user associated with theuser by using a contact service object to match an attribute of a buddyuser data in the shared memory space, and notifying via thecommunication network a client device of the buddy user that the user isnot accessible to messaging.
 24. The apparatus of claim 17, furthercomprising the messaging gateway locating a buddy user associated withthe user by using a contact service object to match an attribute of abuddy user data in the shared memory space, and notifying via thecommunication network a client device of the buddy user that the user isaccessible to messaging.
 25. The apparatus of claim 17, furthercomprising the messaging gateway receiving via the communication networka new message from the user intended for a buddy user, identifying thebuddy user with a contact service object matching an attribute of theuser data in the shared memory space, and relaying the new message to aclient device of the buddy user via the communication network.
 26. Theapparatus of claim 25, further comprising the messaging gateway placinga new message object containing the new message in the shared memoryspace.
 27. A method for receiving persistent messaging services from adistributed network, comprising: initiating active communications with apersistent messaging service from a client device to cause placement ofa user data in a shared memory space for a user, and to cause locatingof a message object stored in the shared memory space that matches theuser data for a prior messaging session; and receiving a historicalmessage derived from the message object to the client device, whereinthe historical message comprises at least a portion of the priormessaging session.
 28. The method of claim 27, further comprisingsending a new message intended for a predefined group of users to causeidentification of each accessible member of the predefined group ofusers with a contact service object matching an attribute of a pluralityof user data in the shared memory space, and to cause relaying of thenew message to respective client devices of the accessible members. 29.The method of claim 28, further comprising sending the new messageintended for the predefined group of users to cause placement of a newmessage object containing the new message in the shared memory space.30. The method of claim 27, further comprising sending a new messagehaving an interest attribute for distribution to an unspecified subsetof accessible users to cause identification of the unspecified subset ofaccessible users with a shout service object matching the interestattribute with a plurality of user data in the shared memory space, andto cause relaying of the new message to respective client devices of theuspecified subset of accessible users.
 31. The method of claim 30,wherein the new message comprises an advertisement.
 32. The method ofclaim 27, further comprising requesting messaging service to causelocating of an interface object in the shared memory space.
 33. Themethod of claim 27, further comprising sending an indication that theuser is no longer accessible to the persistent messaging service tocause locating a buddy user associated with the user by using a contactservice object to match an attribute of a buddy user data in the sharedmemory space, and to cause notifying a client device of the buddy userthat the user is not accessible to messaging.
 34. The method of claim27, further comprising: initiating active communications with thepersistent messaging service from the client device to further causelocating a buddy user associated with the user by using a contactservice object to match an attribute of a buddy user data in the sharedmemory space, and thus causing a notification to a client device of thebuddy user that the user is accessible to messaging.
 35. The method ofclaim 27, further comprising sending a new message intended for a buddyuser that causes identification of the buddy user with a contact serviceobject matching an attribute of the user data in the shared memory spaceand that causes relaying the new message to a client device of the buddyuser.
 36. The method of claim 35, further comprising sending the newmessage intended for the buddy user to cause placement of a new messageobject containing the new message in the shared memory space.
 37. Atleast one processor for receiving persistent messaging services from adistributed network, comprising: a hardware module for initiating activecommunications with a persistent messaging service from a client deviceto cause placement of a user data in a shared memory space for a user,and to cause locating of a message object stored in the shared memoryspace that matches the user data for a prior messaging session; and agiven module for receiving a historical message derived from the messageobject to the client device, wherein the historical message comprises atleast a portion of the prior messaging session.
 38. A computer programproduct for receiving persistent messaging services from a distributednetwork, comprising: a non-transitory computer-readable medium,comprising: at least one instruction for causing a computer to initiateactive-communications with a persistent messaging service from a clientdevice to cause placement of a user data in a shared memory space for auser, and to cause locating of a message object stored in the sharedmemory space that matches the user data for a prior messaging session;and at least one instruction for causing the computer to receive ahistorical message derived from the message object to the client device,wherein the historical message comprises at least a portion of the priormessaging session.
 39. An apparatus for receiving persistent messagingservices from a distributed network, comprising: means for initiatingactive communications with a persistent messaging service from a clientdevice to cause placement of a user data in a shared memory space for auser, and to cause locating of a message object stored in the sharedmemory space that matches the user data for a prior messaging session;and means for receiving a historical message derived from the messageobject to the client device, wherein the historical message comprises atleast a portion of the prior messaging session.
 40. An apparatus forreceiving persistent messaging services from a distributed network,comprising: a transmitter and a receiver; a communication module forcontrolling the transmitter and the receiver for communicating over acommunication network to a gateway that operably interacts with a sharedmemory space performing a persistent messaging service; and a userinterface for initiating active communications with the persistentmessaging service via the communication module to cause placement of auser data in the shared memory space for a user, and to cause locatingof a message object stored in the shared memory space that matches theuser data for a prior messaging session, wherein the user interfacereceives via the receiver and the communication module a historicalmessage derived from the message object to a client device, and whereinthe historical message comprises at least a portion of the priormessaging session.
 41. The apparatus of claim 40, further comprising theuser interface sending a new message via the communication moduleintended for a predefined group of users to cause identification of eachaccessible member of the predefined group of users with a contactservice object matching an attribute of a plurality of user data in theshared memory space, and to cause relaying of the new message torespective client devices of the accessible members.
 42. The apparatusof claim 41, further comprising the user interface sending the newmessage intended for the predefined group of users to further causeplacement of a new message object containing the new message in theshared memory space.
 43. The apparatus of claim 40, further comprisingthe user interface sending via the communication module a new messagehaving an interest attribute for distribution to an unspecified subsetof accessible users to cause identification of the unspecified subset ofaccessible users with a shout service object matching the interestattribute with a plurality of user data in the shared memory space, andto cause relaying of the new message to respective client devices of theunspecified subset of accessible users.
 44. The apparatus of claim 43,wherein the new message comprises an advertisement.
 45. The apparatus ofclaim 37, further comprising the user interface requesting via thecommunication module the persistent messaging service to cause locatingof an interface object in the shared memory space.
 46. The apparatus ofclaim 37, further comprising the user interface sending via thecommunication module an indication that the user is no longer accessibleto the persistent messaging service to cause locating a buddy userassociated with the user by using a contact service object to match anattribute of a buddy user data in the shared memory space, and to causenotifying a client device of the buddy user that the user is notaccessible to messaging.
 47. The apparatus of claim 40, furthercomprising the user interface initiating active communications via thecommunication module with the persistent messaging service from theclient device to further cause locating a buddy user associated with theuser by using a contact service object to match an attribute of a buddyuser data in the shared memory space, and thus causing a notification toa client device of the buddy user that the user is accessible tomessaging.
 48. The apparatus of claim 40, further comprising the userinterface sending a new message via the communication module intendedfor a buddy user that causes identification of the buddy user with acontact service object matching an attribute of the user data in theshared memory space and that causes relaying the new message to a clientdevice of the buddy user.
 49. The apparatus of claim 48, furthercomprising the user interface sending the new message intended for thebuddy user to further cause placement of a new message object containingthe new message in the shared memory space.